402 Mr. G. Meade- Waldo 07i 



seems only found in the lialt'-closed yellow flowers of a species 

 of Malvace&e, wliicli grows about here, a weed with large 

 pale yellow flower.s. I seize the flower at the front, closing it 

 up, and listening for a buzz ; if I hear it I gather the flower, 

 and put it quietly into a glass-bottomed collecting-box. 

 Tlie bee generally cuts its way through the base of the flower. 

 I was led to look by finding so many blooms \\ irh a dis- 

 coloured hole near the base " {H. Sioale, in lift., 1914). 



Tetralonia simpsoni, sp. n. 



cJ . Nigra ; capita, thorace, tergitibus 2-7 fnlvo-hirtis : tcrgite 1 

 pedibusque dense nigro-liirtis ; steino sternitibus pallide pubcs- 

 centibus ; antennis longissimis (10^ mm.), rufis ; mau(hbuhs 

 basi, clypeoque luteis ; alis hyalinis. 



Long. lOg mm. 



(^ . Black; head (except behind the eyes), thorax above, 

 and tergites 2-7 ^Yith a dense golden-brown pubescence ; 

 behind the eyes, vertex, lace, labrnrn, and sternum clothed 

 with pale hair ; tergite 1 and legs with dense black pubes- 

 cence. Anternite very long, equal in len.gth to whole insect, 

 joints 3 and 4 of fiagellum subequal, all the flagellar joints 

 sinuate. Head broad as thorax, finely punctured ; ocelli in 

 a very broad triangle ; labrum rather coarsely punctured. 

 Femur iii. without any tubercle and tergite 6 without lateral 

 teeth. Wings hyaline, nervures black. Tegulaj ferriiglmjus. 



Length 10^ mm. 



N. Nigeria {Dr. J. J. Simpson). 1 S' 



A conspicuous species, the dense black basal abdominal 

 segment giving it a distinctive appearance. 



Tetralonia fuJviventris, Sm. 

 Tctraloniu fulviventris,. Sm. Catal. Ilyiuen. I'rit. Miis, ii. p. 308 



Tetralonia e.rquisita, Cress. Proc. Acad. Nat. Sci. l'liilail(lplii;i, p. 213 

 (1878). $. 



A $ specimen of ( 'resson's species from Oaxaca, deter- 

 mined by Cockerel!, agrees perfectly with ►^milh's type of 

 T. fulviventris J descriljcd from a Mixican specimen. 



Subfamily VuosovimsM. 



Of remarkable inleicst is tlic new genus Enpahvorhizn 

 here described. Both Perkins and (juekerell have published 

 notes on the interesting fact that there is sexual ilimorphisin 



